Inceptive Vector SVC

Miaomiao Zhang

The following sentences exemplify a sub-type of an aspectual SVC in Mandarin Chinese. More TypeCraft wiki pages on Mandarin Chinese can be found here

• SEM: INCEPTIVE E-activity
• SYN: V1 V2

23).

HTTP Status 500 – Internal Server Error

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Type Exception Report

Message Unable to release JDBC Connection

Description The server encountered an unexpected condition that prevented it from fulfilling the request.

Exception

org.hibernate.exception.JDBCConnectionException: Unable to release JDBC Connection
	org.hibernate.exception.internal.SQLStateConversionDelegate.convert(SQLStateConversionDelegate.java:115)
	org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:42)
	org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:113)
	org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:99)
	org.hibernate.resource.jdbc.internal.LogicalConnectionManagedImpl.releaseConnection(LogicalConnectionManagedImpl.java:199)
	org.hibernate.resource.jdbc.internal.LogicalConnectionManagedImpl.close(LogicalConnectionManagedImpl.java:239)
	org.hibernate.engine.jdbc.internal.JdbcCoordinatorImpl.close(JdbcCoordinatorImpl.java:189)
	org.hibernate.internal.AbstractSharedSessionContract.close(AbstractSharedSessionContract.java:324)
	org.hibernate.internal.SessionImpl.closeWithoutOpenChecks(SessionImpl.java:441)
	org.hibernate.internal.SessionImpl.close(SessionImpl.java:418)
	tc2.web.servlets.ExportServlet.doPost(ExportServlet.java:287)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:660)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)

Root Cause

org.postgresql.util.PSQLException: This connection has been closed.
	org.postgresql.jdbc.PgConnection.checkClosed(PgConnection.java:803)
	org.postgresql.jdbc.PgConnection.setAutoCommit(PgConnection.java:750)
	org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl$PooledConnections.add(DriverManagerConnectionProviderImpl.java:308)
	org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl.closeConnection(DriverManagerConnectionProviderImpl.java:198)
	org.hibernate.internal.NonContextualJdbcConnectionAccess.releaseConnection(NonContextualJdbcConnectionAccess.java:46)
	org.hibernate.resource.jdbc.internal.LogicalConnectionManagedImpl.releaseConnection(LogicalConnectionManagedImpl.java:196)
	org.hibernate.resource.jdbc.internal.LogicalConnectionManagedImpl.close(LogicalConnectionManagedImpl.java:239)
	org.hibernate.engine.jdbc.internal.JdbcCoordinatorImpl.close(JdbcCoordinatorImpl.java:189)
	org.hibernate.internal.AbstractSharedSessionContract.close(AbstractSharedSessionContract.java:324)
	org.hibernate.internal.SessionImpl.closeWithoutOpenChecks(SessionImpl.java:441)
	org.hibernate.internal.SessionImpl.close(SessionImpl.java:418)
	tc2.web.servlets.ExportServlet.doPost(ExportServlet.java:287)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:660)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)

Note The full stack trace of the root cause is available in the server logs.

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